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Troubleshooting
4-4-4. Indoor Fan error
Indoor unit display
Judgment method
Symptom
Yes
Is the RPM of motor less
than 120?
Check the motor and
replace it.
[1-way cassette model]
Yes
Check the motor and
replace it
(E154)
360 Cassette
Refer to checking method, as shown below
If the motor connector break away / Indoor unit Fan does not operate by motor or PBA defectiveness.
During operation or Operation at the beginning :
E154 is displayed.
Is the motor connector(CN73)
disconnected from the PCB?
Does the motor rotates when operating?
Yes
Is voltage of DC 0V~DC 6V displayed?
Check the PCB and
Is the motor connector (CN73) or (CN44)
disconnected from the PCB?
of AC 220V displayed to Motor
after operation signal permission
Check the PCB and replace it
x(Ice blue) x(Yellow green) ◑(Blue) ◑(Red)
No
No
Motor
:
No
replace it
No
Is voltage
of Fan?
No
4-30
Yes
Connect the
connector to PCB
Check the normal
operation.
YES) FAN RPM
DC0V~DC6V
1 2 3 4 5 6
Yes
Connect the
connector to PCB
Check the normal
operation
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